Generator Breaker Control - Deif GC-1F Installation Instructions Manual

GC-1F Installation Instructions and Reference Handbook

Generator breaker control

Breaker closing
Since the generator is assumed to run alone (single generator island), the breaker will close
immediately when the Hz/V OK status is reached (AUTO), or if the breaker close button is
activated (LOCAL). In LOCAL mode the breaker can be closed by pressing the GB close button
on the front of the GC-1F, when Hz/V is OK.
Relay output control
The generator breaker can be a contactor or pulse breaker. The preferred type can be selected
in the output list. More details about pulse breakers can be found under the Breaker selection
description.
HW 1.05 and SW 2.x.x supports only pulse breakers.
Breaker trip control
Any alarm selected to have the fail class Trip or Shutdown will automatically open the breaker
control relay. If the breaker is closed when the idle speed is activated, a breaker out signal will
be transmitted.
Breaker ON/OFF feedback
As default there is no feedback for breaker ON or OFF. The breaker position LED is paralleled
to the breaker control relay output. It is possible, however, to select a binary input to be breaker
ON feedback and/or an OFF feedback. This is done via an extra selection in the input settings of
the PC utility software. This extra input is called GB Pos on or GB Pos off and MB Pos on or MB
Pos off.
This icon activates the inputs settings:
If the input Breaker ON feedback is selected, then the input must be connected and activated, if
the breaker is ON. The reason is that a Breaker close failure alarm will appear, if the breaker
control relay is activated without the binary input. Also, if the breaker control relay is OFF and the
binary input is ON, then a Breaker open failure alarm will appear.
These alarms are fixed with the fail class Warning.
Engine temperature controlled GB closing
This function can be used, if it is recommendable that the engine cooling water temperature
must be above a certain temperature before the engine is loaded. In the parameter 6360 it is
possible to set the cooling water temperature that must be exceeded, before the generator
breaker is closed.
The function is also enabled/disabled in parameter 6360. An engine heating message is
displayed, until the engine cooling water temperature has reached the set point in parameter
6360.
The engine cooling water temperature sensor must be selected to be a VDO sensor to make the
function work. If the option B3 (AMF logic) is enabled, this function will also work upon a mains
failure.
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